CURRENT BAND CONDX = Solar-terrestrial indices for 20 January follow. Solar flux 70 and estimated planetary A-index 8. The estimated planetary K-index at 1500 UTC on 21 January was 3. No space weather storms were observed for the past 24 hours. No space weather storms are predicted for the next 24 hours.

ALERT CONDITION: WHISKY ( WHITE )

Sunday, January 21, 2018 - 16:46 GMT - UPDATE # 34

OPERATIONAL FORECAST. - GEOMAGNETIC FIELD. The geomagnetic field will likely reach isolated periods of active conditions on day one (21 Jan) due to anticipated CH HSS effects. Unsettled conditions are likely on days two and three (22-23 Jan) as influence from the CH HSS persists. .- SOLAR ACTIVITY. Solar activity is expected to remain at very low levels throughout the forecast period (21-23 Jan).

G/S/R SCALES USED     DEF'S USED     LIGHTNING - (QRN)


HF OPERATIONAL BRIEFING - CURRENT CONDITIONS IN DETAIL

CURRENT SOLAR CONDITIONS


VISIBLE DISK

 


SOLAR MAGNETOGRAM

 


NEAR INFRARED

 


SUNSPOT TRACKING

 

Solar activity was very low. The solar disk was spotless. There were no Earth-directed CMEs observed in available satellite imagery.


RADIO BLACKOUTS - SOLAR STORMS - GEOMAGNETIC STORMS

The geomagnetic field was at quiet to unsettled levels.


"D" LAYER - HF ATTENUATION LEVELS


AURORA  -   NORTH POLE  - SHORT PATH